Rotary engine.



L. lVl. SHERIDAN.

RO'TARY ENGINE. APPLICATION FILED mAYsx, 19u.

l ,3@2238 Patente@ Apr. 29, 1919.

4 SHEETS-SHEET l.

Witnesses lnventr7 www Atto rn e ysa LQM. SHEHIDAN.

ROTARY ENGINE.

APPLICATION FILED MAYSI. |917.

II. 3UI2,233 Patented Apr. 2S), 191).

4 SHEETS-SHEET 2.

Witnesses Inventory Attorneys o Witnesses L. NI. SHERIDAN.

ROTARY ENGINE.

APPLICATION FILED MAY31,1911.

l 93025,@33 atented Apr. 29, 1919.

4 SHEETS-SHEET 3- L. M. SHERIDAN.

ROTARY ENGINE.

'APPLlcATxoN FILED Mln/31,1917.

4 SHEETS-SHEET 4.

Witnesses Inventory Attorneys o narran strains PATENT canton. I

LESLIE M. SHEEIDAN, 0F EL PASO, TEXAS.

ROTARY ENGIINE.

Lacasse.

Application tiled May 31, 1917.

To all whom t may concern.'

Be it known that I, LEsLre M. SHERIDA-N,

-a citizen of the 'United States, residing at this application is adapted to be employed as a rotary engine, as a pump for liquids, as an air compressor, as a vacuum pump and for other purposes, but for convenience in description, it will be presupposed that the structure is employed as a rotary engine.

The invention aims to provide novel means whereby rotary movement is imparted to the shaft, and to improve generally and to enhance the utility of devices of that type to which the present invention appertains.I

With the above and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood4 that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed, without departing from the spirit of the invention.

1n the accompanying drawings Figure 1 shows in vertical section, a device constructed in accordance with the present invention, parts appearing in section;

Fig. 2 is a vertical section in which the cutting plane is disposed at right angles to the cutting plane of Fig. 1;

Fig. 3 is a vertical section showing a modied form of the invention;

Fig. 4: is a vertical section of the structure shown in Fig. 3;

Fig. 5 is a horizontal section of the device delineated in Fig. 3, the line 3-3 'of Fig. 5 denoting the cutting plane in which Fig. 3 is takeng'and Fig. 6 is a sectional detail illustrating the means whereby rotation is imparted iin-- Specication of Letters Patent.

Serial No. 171,950.

sembled with thestator and includes an edge portion 8 coperating with the ring 5 of the stator to form a water jacket, the entrance and the eXit for which are represented by suitable connections 9 carried by the part 8 of the casing. Disks l() coperate with the side plates 3 to form side water jackets.

rEhe sleeves 2 of the stator carry bushings 11 in which is journaled for rotation a shaft 12 carrying a iiy wheel 14, the shaft 12 being eccentrically mounted in the stator. 'llhe shaft 12 is provided with projecting arms 15.

Disposed within the stator is a pair of pistons, each including a hub 16 and a body. 17,

17 of the pistons are curved to conform to. 5 of the stator.l

the4 inner curve of the rin A'.lhe inner edges of the hu s 16 of the pis'- tons are recessed to receive packing rings 19. The outer surfaces of the pistons carry packings 20, pressed outwardly by springs 21 to cooperate with the side plates 3. ln theends of the body portions 17 of the pistons are formed recesses 2-2 which at times coperate to form an expansion chamber 23, as shown in Fig. 2. rlihe charge in the eX- pansion chamber 23 may be ignited by a plug 24 carried by one of the side plates 3, or in any other suitable manner. One of the side plates 3 is provided with an .inlet port 25 and with an exhaust port 26 as indicated in Fig. 2'. 1n the peripheries of the hubs 16 of the pistons, slots 27 are formed. Blocks 28 are adapted to work in the slots 26 and are pivoted at 29 to the pistons. `Fhe blocks 29 are provided with guide passages 30, receiving the arms 15 of the shaft 12 slidably. y

The side plates 3 of the stator are provided with oil ports 31, communicating with pipes 32, the pipes being adapted to supply "a lubricant for lubricating and cooling the working parts of the engine.

Let it be supposed that the parts are arranged as shown in Fig. 2, and that a charge has been compressed in the chamber 23.4

When the charge in the chamber 23 is ignited, the pistons tend to separate, the blocks 28 pivoting on their mountings 29 and sliding on the arms 15 of the shaft 12,' rotation being imparted to the shaft in this way. The charge in the chamber 23 tends to expand through an arc of 180 degrees,

rate-atea aan. ee, taie.

' charge is again ignited) and through the next 180 degrees, thechamber 23 contracts to assume the proportions shown in Fig. 2. During this last specified operation, the exhaust leaves by way of the port 26. During the next 180 degrees of revolution, the chamber 23 enlarges and f takes in a charge through the port 2,5'. During the next 180 degrees of revolution, the charge is compressed, the parts assuming the positions of Fig. 2, whereupon the The -operation above described has been confined to. but one of the chambers 23, but itis obvious ,-.that a chamber 23 is formed Vat both ends of the pis-- tons, one chamber 23 enlarging under the action ofthe expandingI charge, while the no valve mechanism adapted for the ends in view has been shown.

As shown in Figs. 3, 4, 5 and 6, the engine includes an outer plate 33, an inner plate 34 and a ring 35 located between the plates, the parts above mentioned constituting the stator. Coperating with the inner late 34 is an inner plate' 36 having aring 3 engagf" ing an outer plate 38, the plate 36, the

37 and the plate 38 forming an auxiliary casing. The plate V38* has a bearing 39 carryiiig a bushing 57. 'The plate 33 isy provided with a bea-rin 40. The pistons are o? the general type here? inbefore described, and therefore they need not be alluded to in great detail, each piston including a body 41 and a hub 42. The expansion chamber appears at 43. and Athe spark plug is shown at 44. The necessary packings 45 are provided, as before. One of the pistons is carried by a solidshaft 46 journaled in the bearing 40. The other piston is carried by a tubular shaft 47 surrounding the shaft 46 and journaled in the hubs 48 formed on the plates 34 and 36. The shaft 47 is provided with an arm 49 located in the auxiliary casing above mentioned: The shaft 46 is provided with an arm 50 located in the auxiliary casing. The numeral 51 denotes a bar disposed in the auxiliary casing. The bar 51 has a longitudinal guide way 52. The numeral A53 denotes a link forming a pivotal connection between the outer end of the arm 49 and one end of the bar 51. The outer end of the arm 50 is pivoted directly to the other end of the bar 51. Journaled the bushing 5-7 is a shaft 56, the same being mounted eccentrically with respect to the stator. The shaft 56 carries a parallel-sided block 55 mounted to slide in the guideway 52 of. the link bar 51.

In practical opleration, when the istons. are operated'in t e manner hereinbe ore set forth, the shafts 47 and 46 will be rotated, motion being transmitted to the bar 51 by the-arm 50, from the shaft 46, and motion being transmitted to the bar 51, from the shaft 47, by means of the arm 49 and the link 53. When the bar 51 is operated, the

block 5'5A slides in the guideway 52 of the bar 51 and rotary movement is imparted to the shaft 56. l

It will bef'obvious that the device forming the subject matter of this application may be used. as a pump, the essential mechanical elements of the device being retained. Thus, taking the structures shown in Figs.l 1 and 2 Aas typical, theshaft 12 is power driven, the iiuid which is to be pumped being sucked in as the chamber 23 increases in size, and heing expelled as the chamber 23 decreases in size.

movement in the stator andl conforming to.

the inner curve of the stator, theends of the pistons being provided with coperating recesses extended entirely thereacross and deiningexpansion chambers whenthe ends oftli'epistons abut, the expansion chambers beiig.,`open at their ends throughout the entire'diameter v'of the expansion chambers,

i' 'relatively movable circ'um rentially o the stator to enlarge 'and diminish the chambers, the stator hav' in one side, an inlet port, and being provided in one side with an exhaust port, the ports communicating at different times with each chamber; a. shaft journaled in the stator; means for operatively connecting` the shaft with the pistons; and an ignition device carried by one side of the stator and cooperating with the chambers, throughout the entire diameter of each chamber.'

2. In a device of the class described, a stator; a pair of pistons having orbital movement inthe stator, the ends of the pistons coperating. to formlexpansion chambers, the pistons bein relatively movable circumferentially of t e stator to enlarge and diminish the chambers, the stator having an inlet ort and exhaust port communicating at different tim-.es with each chamber; a shaft journaled in the stator; means for operatively connecting the shaft with `the pistons; and lubricant conveying pipes communicating with the stator, said meansbeing effective to cause a circulation of lubricant, byway of said pipes, thereby to Having thus described the invention, what.

asomae eect a lubrication and a cooling of the structure.

3. ln a device of the class described, a stator; a pair of pistons having orbital movement in the stator, the ends of the pistons cooperating to form expansion chambers,' the pistons being relatively movable cireumferentially 'of the stator to enlarge and diminish the chambers, thestator having an inlet port and an exhaust port com` municating at di'erent times with each chamber; a shaft journaled in the stator and having; arms; blocks pivoted to the pistons and receiving the arms slidably; and lubricant-conveying means communicating 15 with the stator, the blocks being movable to cause a circulation of the lubricant, by Way of said means, thereby to effect a lubrication and a cooling of the structure.

ln testimony that claim the foregoing 2o as my own, l have hereto axed my signa- `ture in the presence of two Witnesses.

LESLIE M. SHERIIIDAN.

Witnesses: A. STATHAM,

LAURA THOMPSON. 

